CMake on Windows

user_2213825 0
Viewed 69480

I am trying to run CMake on Windows, and I get the following error:

-- The C compiler identification is unknown
CMake Error at CMakeLists.txt:3 (PROJECT):
  The CMAKE_C_COMPILER:

    cl

  is not a full path and was not found in the PATH.

  To use the NMake generator with Visual C++, cmake must be run from a shell
  that can use the compiler cl from the command line.  This environment is
  unable to invoke the cl compiler.  To fix this problem, run cmake from the
  Visual Studio Command Prompt (vcvarsall.bat).

  Tell CMake where to find the compiler by setting either the environment
  variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
  the compiler, or to the compiler name if it is in the PATH.

However my "CC" environment variable is set!

>>echo %CC%
C:\Anaconda2\MinGW\x86_64-w64-mingw32\bin\gcc.exe
cmake c c++
3 Answers

I use cmake -G "MinGW Makefiles" . instead of cmake . It worked!

user_80515360

I came across the same problem and what worked for me was:

  1. I installed Visual Studio (following this tutorial ).
  • You will need to install the 2019 version (it is 2021 now) -- there are a few extra things but it's fine. The entire thing is about 6.7 G.
  • You don't really need the pip install dlib part and the rest.
  1. On the basis of the above tutorial, I added this path to the environment variable ( C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.29.30037\bin\Hostx64\x64. The method of adding paths to the environment variable can also be found in the above tutorial.)
user_58383100
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